Chongqing Xiegu Technology XPA125B Linear Power Amplifier User Manual

Chongqing Xiegu Technology Co.,Ltd. Linear Power Amplifier

User manual

XIEGU 100 W Solid-State Linear Power Amplifier XPA125B Instruction Manual Copyright © 2010~2017 Xiegu Communications This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions:(1) This device may not cause harmful interference, and(2) This device must accept any interference received, including interference that may cause undesired operation.FCC ID: 2ANLH-XPA125B
XIEGU COMMUNICATIONS 1 XPA125B Specifications 1.1 Amplifier: Frequency range: 1.0 – 55 MHz Maximum output power: 1.8 - 30MHz ≥110W 50 - 54MHz ≥90W Maximum operating ambient temperature: 55℃ Gain: 13dB (±2dB) Supply voltage: 12 - 14.5 V DC Current draw @ maximum output: Standby: 260 mA @Max Transmit: 30A @Max 1.2 ATU: Tuning frequency range: 1.8 – 30 MHz/50 – 54 MHz Maximum tuning range: 14 - 500Ω 1.3 Product specifications： Dimensions: 260 x 150 x 100 mm (not including control knobs, feet, handles, etc.) Weight：2.66 Kg(host only) 3
XIEGU COMMUNICATIONS 2 Equipment description 2.1 Front panel layout: ① Power key When XPA125B is turned on, press this button and hold for 2 seconds, XPA125B will shut down. When XPA125B is turned off, press this button and hold for 2 seconds, XPA125B will turn on. ② ATU function key Via this button you can access the automatic antenna tuning function. ③ BAND selection key Using this button you can select between manual band switching or automatic band switching. In manual band switching mode, the XPA125B will change bands in the following order: 160m→80m→60m→40m→30m→20m→17m→15m→12m→10m→6m ④ PA key Used to switch the power amplifier into or out of circuit. 4
XIEGU COMMUNICATIONS ⑤ LCD All working status information is displayed here. The display is covered by an organic glass protective plate. 2.2 Rear panel layout: 6 DC IN Power supply socket: The XPA125B requires a 12 - 14.5 V DC supply 7 ANT Connector: The ANT socket is connected to the antenna, the connector model is SL16-K. 8 FUSE Holder: Internal fuse holder. Fuse rating is DC 30A. 9 10 Ground ACC socket: The data interface connections are as follows: 5
XIEGU COMMUNICATIONS PIN1：NC PIN2：PTT Signal input PIN4： ALC input PIN5： NC PIN3：Band voltage input PIN6： GND 11TRX Socket: The TRX interface is connected to the transceiver output, the connector model is SL16-K. 12Comm interface: This interface is for XPA125B firmware updates and connection to a PC. 2.3 Display interface layout: ⑴ Input SWR value: Displays the SWR value of the XPA125B input. ⑵ Operating voltage: Displays the value of DC voltage supply to the XPA125B. ⑶ Operating current value: Displays the current being drawn by the XPA125B. ⑷ Output stage temperature: Displays the current temperature of the PA stage. ⑸ Output SWR value: Displays the SWR value of the XPA125B output. 6
XIEGU COMMUNICATIONS ⑹ Power amplifier status: Displays the overall status of the power amplifier as a whole. Indicates that bypass mode is selected, the power amplifier is switched out of circuit. Indicates that the power amplifier is operational. RX Indicates that the unit is in receive mode. TX Indicates that the unit is in the transmit mode. ⑺ Input power value: Displays the power input value to the XPA125B in Watts. ⑻ Current working band status: Displays the current working band, and whether automatic or manual mode is selected. (9) Output power value: Displays the output power being delivered by the XPA125B in Watts. Automatic antenna tuner unit (ATU) status: (10) Displays the status of the automatic antenna tuner. Indicates that the XPA125B is not connected to the automatic antenna tuner unit. Indicates that the XPA125B is connected to the automatic antenna tuner unit. When tuning is successful,【INUSE】will be displayed. If tuning fails,【Fail】will be displayed. 7
XIEGU COMMUNICATIONS 3. Operating instructions 3.1 Wiring connection method 3.1.1 Method for connecting XPA125B with X108G The XPA125B can be directly connected to an X108G, which can then control the band switching and ALC functions of the amplifier. - The ACC data cable supplied with the XPA125B is connected between the ACC ports of the two units. Both connectors are the same so either end of the cable can be connected to either socket. Use suitable RF coaxial cable to connect the X108G ANT port to the XPA125B TRX port. - - XPA125B ANTportshould beconnected to theantenna. 3.1.2 Method for connecting XPA125B with X5105 Use the dedicated connection cable CN-115 to connect the X5105 ACC port with the XPA125B ACC port. Please note the need to distinguish between the different plugs of the connection cable CN-115. 3.1.3 Method for connecting XPA125B with X1M As the X1M does not have a dedicated ACC interface and PTT signal output, it can’t be directly connected to the XPA125B. A CN-17 converter is required to connect an X1M to the XPA125B. 8
XIEGU COMMUNICATIONS 3.1.4 Connection method between XPA125B and other QRP radio If you want to start the XPA125B power amplifier and put it into the transmit mode, you need to set the PTT port to a low level [level≤0.1V]. If the PTT output signal of the transceiver is at high level, the high level needs to be converted into a low level, and then input to the XPA125B [ACC-PTT] port. Pin 2 of the XPA125B ACC port is the PTT input port In order to achieve automatic band switching, the corresponding band voltage is needed. XPA125B band control voltage information is as follows. BAND LEVEL(mV) 230 460 690 920 BAND LEVEL(mV) 1380 1610 1840 2070 BAND 50.0 MHz ---- ---- ---- LEVEL(mV) 2530 ---- ---- ---- 1.8 MHz 3.8 MHz 5.0 MHz 7.0 MHz 10.0 MHz 14.0 MHz 18.0 MHz 21.0 MHz 24.0 MHz 28.0 MHz 1150 2300 ---- ---- 3.2 Procedure: 3.2.1 Using the power amplifier unit [PA unit] (ATU unit is set to BYPS) - - PressthePAkey,sothatthestateoftheamplifieris[INUSE]. If your connected transceiver is an X108G or X5105, please set the output power to 5 W. If you are using any other QRP transceiver, please set the output power to 1 W. Set your transceiver to CW mode, press the CW key to transmit, andtheXPA125B amplifier will be activated. Theoutput powerofthe XPA125B canbe adjustedby adjusting theoutputpowerofthe connected transceiver. - - - 9
XIEGU COMMUNICATIONS Warning: 1. Do not allow the maximum output power of the amplifier to exceed 120 W. 2. Using the XPA125B at high power levels for extended periods can lead to overheating and potential damage to the PA stage. 3.2.2 Band switching - - - Youcanswitchbetweenthetwomodesof[AUTO-MANUAL] via this key. If you want to connect the XPA125B to an X108G or X5105, please setXPA125B to[AUTO]mode. If you want to connect the XPA125B to other devices, please set XPA125B to [MANUAL] mode and manually switch to the desired frequency band. Manual switching of frequency bands follows this order： 160m→80m→60m→40m→30m→20m→17m→15m→12m→10m→6m 3.2.3 Using the automatic antenna tuner unit [ATU] (PA unit is set to BYPS state). - Pressthe [ATU]buttonso thatthecurrentstateof theamplifier is [INUSE]. SetthetransceivermodetoCW& settheoutputpowerto5 W. - - Press the CW key to transmit, and the XPA125B PA amplifier stage will be activated. The XPA125B ATU unit will start, the screen will display [TUNE]. - - Iftuningissuccessful,thescreenwilldisplay[INUSE]. If tuningfails,thescreenwilldisplay[Fail]. If you need to re-tune, you can press the [ATU] button for two seconds to force the XPA125B ATU unit to start re-tuning. After successful tuning, switch the transceiver to the desired state for use. 10
XIEGU COMMUNICATIONS 3.2.4 Combined use of power amplifier + automatic antenna tuner - - Press the [PA] button so the current state of the PA unit displays [INUSE]. Pressthe[ATU]buttonsothecurrentstateoftheATUunit displays [INUSE]. - - Set the transceiver mode to CW, the output power to 5 W, and press the CW key. If the current SWR value is more than 3.0, the ATU unit will start tuningautomatically. Atthistime the PA unit will be disabled. If the current SWR value is less than 3.0, the ATU unit will start tuningautomatically,andthePAunitwill be activated. If the current SWR value is more than 3.0, and automatic tuning fails, the XPA125B will automatically switch to bypass mode and display this informationonthescreen. - - 3.2.5 Flexible configuration of PA unit and ATU unit The ATU unit and PA unit of XPA125B can be used independently of each other. You can therefore use the XPA125B as either an automatic antenna tuner or a separate power amplifier. You can also bypass both units, and your transceiver will then be connected directly to the antenna. 3.2.6 Protection and warning The XPA125B incorporates a variety of intelligent protection functions to ensure as far as possible the safety of the equipment in daily use. When the XPA125B enters an abnormal state, it will immediately enter protection mode and switch to bypass mode. 3.2.7 Remove protection and warning Release the PTT button. Protection will be disabled and the XPA125B will return to the receiving state. Warning messages are as follows: SWRI too high! (Input value of Idd too high! (Operating SWR is high) PIN too high! (High input power) current is too high) Vdd too high! (Input voltage is too high) SWRO too high! (Output value of Wrong band! SWR is high) (Filter error) PO too high! power) (High output Gain too low! Temp too high! (Operating temperature is too high) Efficiency too low! 11
XIEGU COMMUNICATIONS When high SWR, high current, high voltage, over temperature and other error states are detected, the XPA125B’s internal sensors will trigger the protection function beyond a certain threshold. The threshold of each sensor is as follows: - - - - High SWR：≥3.0 High current：≥30A High voltage：≥15V DC Over temperature：≥100℃ Warning When the XPA125B current draw is too high (more than 30A), or a short circuit occurs, the fuse on the rear panel may blow. The unit will then no longer turn on. Please check the status of the fuse if this occurs. 12
XIEGU COMMUNICATIONS 4. General troubleshooting The following are general troubleshooting suggestions. If they do not resolve the problem the unit will need to be returned to your distributor. Please do not disassemble the unit as this will invalidate the warranty. Fault Possible reasons Solution description Power cord is not connected Connect power cable correctly The fuse on the back of the machine Unable to turn on has blown Replace fuse（30A） your XPA125B Power cable connection is bad Power supply connection reversed Other circumstances Replace or repair power cord Return to distributor Return to distributor Antenna is not connected Antenna failure Properly connect the antenna Replace or repair antenna coax Please confirm the propagation characteristics of the current band Return to distributor No reception No communication Other circumstances Antenna is not connected Connect antenna Inadequate power supply current SWR is too high, protection has been triggered Replace the power supply Start ATU/replace antenna/coax No trasmission Select the correct working mode Incorrect working mode Power amplifier unit not enabled Other circumstances Set the PA unit to INUSE Return to distributor Antenna tuning function does not work Antenna tuning function is not enabled Set the ATU unit to INUSE Power cord is not connected Connect power cable correctly Screen has no The fuse on the back of the machine Replace fuse（30A） display has been blown off Other circumstances Return to distributor Smoke comes from equipment Replace smoke – Only joking, return to distributor 13
XIEGU COMMUNICATIONS After-sales service policy 1. Warranty: This product has a one-year warranty effective from the date of purchase. This warranty covers only manufacturing- and parts defects. It does not cover damage caused by lightning, excess voltage on the power supply, accidental damage or purposeful damage or misuse. If the product needs warranty repair within two weeks of receiving the product, XieGu will pay for the shipping both ways. After two weeks XieGu will pay only for return shipping. If the product is not covered under warranty, the customer pays for shipping both ways plus the cost of the repair. 2. Warranty limitations: Any of the following will void the warranty applicable to the product and its accessories: A. Modification-, removal-, or maintenance of the internal circuitry, without permission and authorization; B. Unauthorized change of product’s embedded software; C. Immersion in liquid or signs of external damage; D. Warranty period expired; E. Product’s serial number is missing, torn or blurred so we cannot determine if 14
XIEGU COMMUNICATIONS the radio is under warranty; F.Product was not bought from XieGu or authorized distributor of XieGu. *None of the following conditions, are covered by the warranty: A. Damage caused by improper use by the user； B. Damage caused by an accident； C. Damage due to incorrect testing, maintenance, debugging, or other changes； D. Damage is not caused by the material or the quality of production； E. Damage to the shell or other external components due to improper use. Contact us: service@cqxiegu.com 15
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